KR102527454B1 - Apparatus for cooling converter and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a converter cooling device for cooling the heat of a converter for supplying battery or generator power as power of a power source, a manufacturing method thereof, and a vehicle equipped with the same, wherein a vehicle cooling pipe is buried in a cooling plate so that the top is exposed. In a converter cooling device for cooling the converter by installing a converter on a cooling plate and flowing a cooling fluid through a cooling pipe, a heat conducting member installed between the cooling pipe and the converter to conduct heat of the converter to the cooling pipe or by installing a cooling chamber on the cooling pipe passage to conduct the heat of the converter to the cooling fluid through the upper cover of the cooling chamber. According to the present invention, the cooling plate is made of a lightweight resin material. There is an effect of improving the cooling efficiency by the heat conduction member or the cooling chamber while reducing the total weight by manufacturing.

Description

Converter cooling device and manufacturing method thereof {Apparatus for cooling converter and method for manufacturing the same}

The present invention relates to a converter cooling device and a manufacturing method thereof, and more particularly, to a cooling effect by improving thermal conductivity by inserting and installing a heat conducting member between a cooling pipe buried in a cooling plate and a converter or by inserting and installing a cooling chamber. The present invention relates to a converter cooling device and a method of manufacturing the same, in which the overall weight can be reduced by manufacturing the cooling plate and the chamber body with a lightweight resin material while increasing the height.

In general, a hybrid system of a vehicle may be composed of a combination of an internal combustion engine such as a gasoline engine and a diesel engine and an electric motor. Such a vehicle may be equipped with electric devices such as a secondary battery, an inverter, and a DC/DC converter for driving an electric motor for driving. Here, the secondary battery is discharged and charged by a chemical reaction, and since the chemical reaction reacts with heat generation, the secondary battery must be cooled.

Also, inverters and converters must be cooled since their power elements generate heat. In particular, the DC/DC converter is an electronic device referred to as a power control unit and may be integrally mounted in an engine room of a vehicle or the like.

However, since the converter itself generates a lot of heat, a cooling device is modularized to cool the heat of the converter.

The cooling device of the air-cooled converter includes a cooling fan and a cooling motor, and the cooling fan and fan motor are installed outside the housing of the converter to prevent the converter from overheating by operating the cooling fan when the temperature of the converter increases. .

However, since the cooling fan and the cooling motor of the cooling device of the air-cooled converter are exposed outside the housing of the converter, when the fan motor is submerged or electrically shorted, the cooling device may fail. In addition, even when water freezes inside the cooling fan, the fan motor frequently causes failure.

In view of the above problems, Korean Patent Publication No. 10-1516911 discloses a cooling device for a vehicle converter that can protect the fan motor from flooding and short circuit by separating a cooling fan and fan motor for cooling the vehicle converter. .

However, although the above prior art uses a cooling fan to cool internal parts, since it is an air-cooled structure, it is greatly affected by the ambient temperature and the cooling efficiency is reduced.

Meanwhile, in the water-cooled cooling device, a cooling channel through which a normal cooling fluid flows is installed in a cooling plate, and a converter is installed on the cooling plate to cool the converter. In this case, the heat source of the converter is conducted to the cooling plate, and the heat of the cooling plate is conducted to the cooling fluid of the cooling channel to exchange heat. Therefore, cooling efficiency can be improved only when the cooling plate is made of a material having good thermal conductivity.

However, when the cooling plate is made of a metal having good thermal conductivity, the overall weight is increased, and when the cooling plate is made of a resin material such as plastic, the cooling efficiency is reduced due to low thermal conductivity.

Korean Registered Patent No. 10-1516911 (2015.04.24)

SUMMARY OF THE INVENTION The present invention is to provide a converter cooling device and a method of manufacturing the same, which can improve cooling efficiency by improving thermal conductivity while reducing the weight of the converter cooling device.

Converter cooling device for achieving the object of the present invention,

In a converter cooling device in which a cooling pipe is embedded in a cooling plate, a converter is seated and installed on the cooling plate, and cooling the converter by flowing a cooling fluid into the cooling pipe,

It may further include a heat conduction member between the converter and the cooling pipe to absorb heat from the converter and conduct the heat to the cooling pipe.

The cooling plate body is made of a lightweight resin material.

The cooling pipe is buried in the cooling plate by an insert injection method, and the cooling plate above the cooling pipe is opened so that the upper surface of the cooling pipe is exposed.

The heat conducting member,

It consists of a heat radiating surface that surrounds the cooling pipe and makes surface contact and a heat absorbing surface that extends upward from both sides of the heat radiating surface and is bent in the form of wings, and by applying solder paste to the cooling pipe, the heat radiating surface is It is characterized in that it is installed in surface contact.

The converter is provided with a heat dissipation unit for dissipating heat from heat dissipation elements, and a cooling pipe passes through the cooling plate and a seating groove is formed in which the heat dissipation unit of the converter is seated, and the heat conduction member is provided in the seating groove. do.

The converter cooling device according to the present invention,

a cooling plate having seating grooves in which the heat radiating part is seated corresponding to the heat radiating part of the converter and installing the converter on an upper surface;

a cooling pipe buried and installed to be exposed to the upper surface of the cooling plate and through which cooling fluid flows;

a heat conduction member that surrounds the lower surface and the side surface of the cooling pipe in the seating groove and is in surface contact with the upper surface of the cooling pipe and is installed to form a surface to conduct heat;

a solder paste interposed on a contact surface between the heat conducting member and the cooling pipe;

and a thermal conduction pad attached and installed between the lower surface of the heat dissipation part of the converter and the seating groove including the heat conduction member.

A method for manufacturing a converter cooling device according to the first embodiment of the present invention,

The cooling pipe is buried in the cooling plate so that the upper part is exposed, and a plurality of seating grooves are formed in which the heat radiating part of the converter is seated. As a method of manufacturing a cooling device,

extruding and forming a cooling pipe to be buried in the cooling plate;

A cooling pipe at a position corresponding to the heat radiating part of the converter, including a heat radiating surface that surrounds the cooling piping and has surface contact and a heat absorbing surface extending upward from both sides of the radiating surface and bent in the shape of wings. combining and installing a heat conducting member by applying solder paste to the;

After installing the cooling pipe in which the heat conducting member is installed into the cooling plate injection mold, the top of the cooling pipe and the upper surface of the heat conducting member are exposed and embedded in the cooling plate body, and insert injection is performed to form a seating groove in which the heat dissipating part of the converter is seated. step of doing;

installing heat conduction pads on the exposed top of the cooling pipe and the top surface of the heat conduction member so that the heat dissipation part of the converter is seated in the seating groove;

It is characterized in that it includes.

In addition, the converter cooling device manufacturing method according to the present invention,

The insert injection step,

A first injection step of insert-injecting a part of the cooling plate body so that the upper surface of the cooling pipe and the upper surface of the heat conducting member are open with respect to the region where the heat conducting member is installed after coupling the heat conducting member to the cooling pipe through solder paste;

a dck injection step of injection-molding the entire body of the cooling plate by installing the cooling pipe in which a part of the body and the heat-conducting member are integrally molded by the primary injection into a cooling plate injection mold; It is characterized by performing.

An inverter for supplying the converter cooling device manufactured by the converter cooling device including the heat conduction member and the manufacturing method according to the first embodiment of the present invention to the secondary electricity and the power of the generator as the power of the driving power source motor, and An automobile equipped as a cooling device of the converter can be provided.

The second embodiment according to the present invention,

In the converter cooling device in which the cooling pipe is buried in the cooling plate so that the upper part is exposed and the converter is seated and installed thereon to cool the converter,

Including a cooling chamber installed on the flow path of the cooling pipe at the bottom of the heat radiating part of the converter to expand the cooling flow path and to directly conduct heat from the heat radiating part of the converter to the cooling fluid,

The cooling chamber includes a chamber inserted into and installed on the flow path of the cooling pipe to expand the cooling flow path;

an upper cover of the chamber body that conducts the heat absorbed by the heat dissipation unit of the converter to the cooling fluid flowing in the cooling chamber body;

It is characterized in that it includes.

A heat conduction pad is interposed between the upper cover of the chamber body and the heat dissipation part of the converter.

A method for manufacturing a converter cooling device according to a second embodiment of the present invention,

The cooling pipe is buried in the cooling plate so that the upper part is exposed, and a plurality of seating grooves are formed in which the heat radiating part of the converter is seated. As a method of manufacturing a cooling device,

extruding and forming a cooling pipe to be buried in the cooling plate;

A chamber body having pipe connection parts formed on both sides, communicating with the cooling passage through the pipe connection part and forming a chamber with an open top surface, and a top cover made of a material having good thermal conductivity and coupled to cover the top surface of the chamber body. and cutting the cooling pipe at a position corresponding to the heat dissipation part of the converter at a predetermined interval and inserting the chamber body to connect and install the cooling pipe to the pipe connection part on both sides;

After installing the chamber body on the flow path of the cooling pipe and installing the cooling pipe coupled to the upper cover into the cooling plate injection mold, the top of the cooling pipe and the upper surface of the upper cover are exposed and embedded in the cooling plate body, and the converter insert injection to form a seating groove in which the heat dissipation unit is seated;

installing heat conduction pads on the exposed top of the cooling pipe and the upper surface of the top cover so that the heat dissipation part of the converter is seated in the seating groove;

It is characterized in that it includes.

In addition, in the configuration in which the cooling chamber is installed, the cooling chamber is inserted and installed on the flow path of the cooling pipe, the first injection is performed to inject a part of the cooling plate body including the corresponding part, and then it is installed in the mold to form the entire body. It can be manufactured by a method of secondary injection of injection.

The converter cooling device including the cooling chamber according to the second embodiment of the present invention and the converter cooling device manufactured by the manufacturing method have an inverter for supplying secondary electricity and generator power to driving power source motor power, and An automobile equipped as a cooling device of the converter can be provided.

The third embodiment according to the present invention,

The cooling pipe is buried in the cooling plate so that the upper part is exposed, and a plurality of seating grooves are formed in which the heat radiating part of the converter is seated. As a cooling device,

a heat conduction member that conducts heat between the heat dissipation unit of the converter and the cooling pipe;

a cooling chamber composed of a chamber body inserted and installed on the flow path of the cooling pipe and an upper cover of the chamber body that directly conducts the heat of the heat dissipating unit of the converter to the cooling fluid;

It is characterized in that any one or combination of a heat conduction member or a cooling chamber is installed according to each of the seating grooves.

A heat conduction pad may be interposed between the heat conduction member and the heat dissipation part of the converter and between the upper cover of the cooling chamber.

The cooling plate body and the chamber body of the cooling chamber are made of a lightweight resin material.

The heat conducting member and the upper cover are made of a metal having good thermal conductivity, such as aluminum.

The converter cooling device manufacturing method according to the third embodiment,

A method for manufacturing a converter cooling device in which a cooling pipe is embedded in a cooling plate, a converter is seated and installed on the cooling plate, and cooling the converter is cooled by flowing a cooling fluid into the cooling pipe,

Extruding and forming a cooling pipe to be buried in a cooling plate;

A heat conduction member having a heat radiating surface that is in surface contact with a cooling pipe and a heat absorbing surface extending upward from both sides of the heat radiating surface and bent into a wing shape, and

Pipe connection parts are formed on both sides, and the cooling pipe is connected to the cooling pipe through the pipe connection part to communicate with the cooling flow path and to form a chamber with an open upper surface and a chamber body and an upper cover coupled to cover the upper surface of the chamber body. preparing the chamber;

coupling and installing the heat conduction member to the cooling pipe at a position corresponding to the heat dissipation part of the converter, or inserting and installing the cooling chamber on the flow path of the cooling pipe;

A first injection step of insert-injecting a region where the heat conducting member or the cooling chamber is installed and molding a part of the cooling plate body;

In the first injection step, a cooling pipe in which the heat conducting member or the cooling chamber forms a part of the cooling plate body together with the cooling pipe is installed in a cooling plate injection mold to perform secondary injection molding;

In the secondary injection step, the heat dissipation part of the converter is installed to correspond to the cooling pipe and heat conduction member buried in the body of the cooling plate so that the upper part is exposed, and the heat conduction pad on the upper surface of the upper cover of the cooling chamber. .

In addition, when the heat conducting member installed in the cooling pipe and the cooling chamber are close to each other, the first injection molding is performed so that the adjacent heat conducting member and the cooling chamber are embedded in a body of one cooling plate, and the second injection molding is performed using this.

The converter cooling device in which the heat conduction member or/and the cooling chamber is installed in the cooling pipe according to the present invention and the converter cooling device manufactured by the manufacturing method supply the secondary electricity and the power of the generator to the power of the driving power source motor It is possible to provide a vehicle equipped with an inverter and a cooling device for the converter.

In the converter cooling device according to the present invention, the cooling plate body can be made of a lightweight resin material to reduce weight, and the heat conduction member is made of a metal material with good thermal conductivity such as aluminum, so that the heat generated from the converter is cooled. Since it is easily conducted through the pipe and the heat exchange efficiency is improved, the cooling effect can be increased.

In addition, when the cooling chamber is provided, the chamber body and the cooling plate body can be made of a lightweight resin material to reduce the overall weight, and the upper cover of the chamber body is made of a metal material with good thermal conductivity, so that the heat dissipation part of the converter is reduced. Since the cooling fluid is directly conducted through the upper cover, the cooling efficiency is increased.

In the method for manufacturing a cooling device according to the present invention, a heat conducting member is installed in a cooling pipe and insert-injected so that the upper surface is exposed, so that the heat conducting member can be formed as a member that is in surface contact while wrapping around the cooling pipe, thereby forming a wide heat conducting area. Since it is buried together with the cooling pipe, it can be manufactured integrally without a separate fixing means or a separate installation space or structure, so the manufacturing process is simple.

In addition, in the manufacturing method of a cooling device having a cooling chamber, the connection between the cooling chamber and the pipe is performed by insert-injecting the chamber body to be connected to the cooling pipe and buried in the cooling plate with the top open in a state where the upper cover is coupled. Since the part and the joint part of the upper cover are buried in the body of the cooling plate, there is an effect that they can be integrally formed without worrying about water leakage.

In addition, in the cooling device manufacturing method according to the third embodiment, the heat conducting member or the cooling chamber is installed in the cooling pipe, and the cooling plate body is formed integrally with only the heat conducting member or the cooling chamber installation part by an insert injection method, and this is secondary. As a method of forming the entire cooling plate by the insert injection method, it is difficult to accurately control the support and alignment of each part when there are a plurality of heat conduction members or cooling chambers installed when insert injection is performed in one process. There is an effect of reducing the occurrence rate of alignment and defects of the heat conducting member or the cooling chamber installation part.

1 (a) to (c) are configuration diagrams of a converter cooling device according to a first embodiment of the present invention.
2 is an explanatory diagram of a method of manufacturing a converter cooling device according to a first embodiment of the present invention.
3 (a) to (c) are diagrams illustrating the configuration of a converter cooling device according to a second embodiment of the present invention.
4 is an explanatory diagram of a method of manufacturing a converter cooling device according to a second embodiment of the present invention.
5 is an explanatory view of a manufacturing method according to another embodiment of a converter cooling device according to the present invention.

Hereinafter, an embodiment of the converter cooling device of the present invention will be described in detail with reference to the accompanying drawings.

1 (a) to (c) are configuration diagrams of a converter cooling device according to a first embodiment of the present invention.

In the first embodiment according to the present invention, the cooling pipe 20 is embedded in the cooling plate 10, the converter 60 is seated and installed on the cooling plate 10, and cooling is performed into the cooling pipe 20. In the converter cooling device for cooling the converter 60 by flowing a fluid,

It is characterized in that it further comprises a heat conduction member 40 between the converter 60 and the cooling pipe 20 to absorb the heat of the converter 60 and conduct the heat to the cooling pipe 20.

The converter cooling device of the first embodiment according to the present invention as described above, as shown in (a) to (c) of FIG.

Corresponding to the heat dissipation part 61 of the converter 60, seating grooves 11 in which the heat dissipation part 61 is seated are formed, and a cooling plate 10 for installing the converter 60 on the upper surface, and the cooling plate It is buried and installed so that the upper part is exposed to the upper surface of the (10), the cooling pipe 20 through which the cooling fluid flows, and the lower surface and the side surface of the cooling pipe 20 in the seating groove 11 are in surface contact and are seated. The heat conduction member 40 installed on the upper surface of the groove 11 to conduct heat of the converter 60 to the cooling pipe 20 and the contact surface between the heat conduction member 40 and the cooling pipe 40 A heat conduction pad 50 attached and installed between the intervening solder paste 30 and the seating groove 11 including the lower surface of the heat dissipating part 61 of the converter 60 and the upper surface of the heat conducting member 40; It is characterized by including.

2 is an explanatory diagram of a method of manufacturing a converter cooling device according to a first embodiment of the present invention.

Forming by extruding the cooling pipe 20 to be embedded in the cooling plate 10 (S10), the cooling pipe 20 is wrapped around the heat dissipation surface 41 and both sides of the heat dissipation surface 41 in surface contact A step (S20) of preparing a heat conducting member 40 having a heat absorbing surface 42 extended upward and bent in a wing shape from the above, and cooling at a position corresponding to the heat dissipation part 61 of the converter 60 After applying the solder paste 30 to the pipe 20 to combine and install the heat conducting member 40 (S30), and installing the cooling pipe 20 in which the heat conducting member 40 is installed into the cooling plate injection mold , The upper part of the cooling pipe 20 and the upper surface of the heat conducting member 40 are buried in the body of the cooling plate 10 so that the top surface of the heat conducting member 40 is exposed, and the seating groove 11 in which the heat dissipating part 61 of the converter 60 is seated is formed. In the insert injection step (S40), the heat dissipation part 61 of the converter is seated in the groove 11 with the heat conduction pad 50 interposed on the exposed upper part of the cooling pipe 20 and the upper surface of the heat conducting member 40. ) It is characterized in that it comprises a step (S50) of installing to be seated.

As shown in (a) of FIG. 1, the cooling pipe 20 through which the cooling fluid flows is buried and installed in the cooling plate 10, and the top of the cooling pipe 20 is open. The cooling plate 10 has a seating groove 11 in which the heat dissipating part 61 of the converter is seated, and the cooling pipe 20 passing through the lower part of the seating groove 11 dissipates heat from the heat dissipating part 61 of the converter. A heat conducting member 30 that absorbs and conducts heat to the cooling pipe 20 is installed. On the lower surface of the converter 60, a heat dissipation unit 61 for dissipating heat from heat generating elements in the converter is formed. The heat dissipation part 61 of the converter is seated in the seating groove 11 of the cooling plate 10, and the cooling pipe 20 passes through the lower part.

In general, the cooling pipe 20 is buried in the cooling plate 10, and the converter 60 is seated and installed thereon to cool the converter. In order for the heat generated in the converter to be conducted to the cooling pipe 20, the cooling plate (10) It is conducted to the cooling pipe 20 through the body. Therefore, cooling efficiency can be improved only when the body of the cooling plate 10 has good thermal conductivity. Therefore, conventionally, the body of the cooling plate 10 is made of a metal material such as aluminum to increase thermal conductivity to cool the converter. Accordingly, there was a disadvantage that the overall weight increased.

In the present invention, the cooling plate is not made of a metal material as described above, but made of a lightweight resin material, and instead, a heat conduction member 40 for heat conduction is inserted and installed between the converter and the cooling pipe to improve the cooling effect and reduce the weight. that made it possible

As shown in (b) of FIG. 1, a heat conduction member 40 having the same shape as (c) in FIG. 1 is coupled to the cooling pipe 20 and installed in a mold for manufacturing a cooling plate by an insert injection method. manufacture The cooling plate 10 above the cooling pipe 20 and the heat conducting member 40 is formed in an open state, and the solder paste 30 is interposed between the cooling pipe 20 and the heat conducting member 40 through an injection process. Combine and install so that surface contact is made.

The heat conducting member 40, as shown in (c) of FIG. 1,

It consists of a heat radiating surface 41 that surrounds the cooling pipe 20 and makes surface contact and a heat absorbing surface 42 extending upward from both sides of the heat radiating surface 41 and bent into a wing shape, and the cooling pipe ( Solder paste 30 is applied to 40) so that the heat dissipation surface 41 is in surface contact with the cooling pipe 20. 1 (c) is a figure showing the shape of the heat conduction member 40 installed in a straight section, but in the curved section of the cooling pipe 20, it is composed of a curved heat conduction member corresponding to the curved shape of the cooling pipe 20. can do.

In the embodiment of the present invention, the converter 60 is provided with a heat dissipation unit 61 for dissipating heat from heat dissipation elements, and a cooling pipe 20 passes through the cooling plate 10 and the converter 60 An example in which a seating groove 11 in which the heat dissipation unit 61 is seated is formed and the heat conducting member 40 is provided in the seating groove 11 will be described as an example. However, it is not limited thereto, and may be configured in which the seating groove or the heat dissipation part is not formed to correspond separately. In this case, the heat conduction member 40 may be installed in the entire cooling pipe 20 or for each specific section.

The converter cooling device in which the heat conduction member 40 according to the present invention is installed in the cooling pipe 20 and the converter cooling device manufactured by the manufacturing method supply the power of the secondary electricity and the generator to the power of the driving power source motor. It is possible to provide a vehicle equipped with an inverter and a cooling device for the converter to do so.

In the first embodiment of the present invention, a heat conduction member 40 is included between the cooling pipe 20 and the converter 60 to conduct the heat of the converter to the cooling pipe 20 so as to be embedded in the cooling plate 10. By doing so, the converter is cooled by conducting heat from the converter heat dissipation unit 61 to the cooling pipe 20 through the heat conduction pad 50 and the heat conduction member 40. Therefore, even if the body of the cooling plate 10 is made of a lightweight resin material rather than a metal material, a cooling effect can be obtained by heat conduction by the heat conducting member 40, and the body of the cooling plate 10 can be made of a lightweight resin material. so that the overall weight can be reduced.

3 (a) to (c) are configuration diagrams of a converter cooling device according to a second embodiment of the present invention.

The second embodiment according to the present invention,

In the converter cooling device in which the cooling pipe 20 is buried in the cooling plate 10 so that the top is exposed and the converter 60 is seated and installed thereon to cool the converter,

The cooling chamber 70 is inserted into the passage of the cooling pipe 20 under the heat dissipation part 61 of the converter to expand the cooling passage and directly conduct heat of the converter heat dissipation part 61 to the cooling fluid. ), but

The cooling chamber 70 is inserted into and installed on the flow path of the cooling pipe 20 to expand the cooling flow path, and the heat absorbed by the heat dissipation part 61 of the converter It includes an upper cover 72 of the chamber body that conducts the cooling fluid flowing therein, and a heat conduction pad 50 is interposed between the upper cover 72 and the heat dissipation part 61 of the converter.

4 is an explanatory diagram of a method of manufacturing a converter cooling device according to a second embodiment of the present invention.

Forming by extruding the cooling pipe 20 to be embedded in the cooling plate 10 (S110), pipe connection parts are formed on both sides, and are connected to the cooling pipe 20 through the pipe connection part to communicate with the cooling passage Prepare a cooling chamber 70 having a chamber body 71 forming a chamber with an open upper surface and a top cover 72 made of a material having good thermal conductivity and coupled to cover the upper surface of the chamber body 71. In the step (S120), the cooling pipe 20 at the position corresponding to the heat dissipating part 61 of the converter is cut at a predetermined distance, the chamber body 71 is inserted, and the cooling pipe 20 is connected to the pipe connection part on both sides. and coupling and installing the upper cover 72 (S130), installing the chamber body 71 on the flow path of the cooling pipe 20, and connecting the cooling pipe 20 with the upper cover 72 coupled to the cooling plate After being installed in the injection mold, the upper part of the cooling pipe 20 and the upper surface of the upper cover 72 are exposed and embedded in the cooling plate body, and the seating groove 11 in which the heat dissipating part 61 of the converter is seated is formed. In the step of injection molding the cooling plate body to be formed (S140), the exposed upper part of the cooling pipe 20 and the upper surface of the upper cover 72 are interposed with the heat conduction pad 50, and the heat dissipating part 61 of the converter is It is characterized in that it includes the step of installing to be seated (S150).

As such, the second embodiment of the present invention, as shown in (a) to (c) of FIG. 3, a cooling chamber ( 70) is installed, the chamber body 71 is made of a non-metal lightweight resin material, and only the upper cover 72 is made of a metal material having good thermal conductivity such as aluminum. In addition, the body of the cooling plate 10 is also made of a lightweight plastic material.

In the cooling chamber 70, pipe connection parts for connecting to the cooling pipe 20 are formed on both sides of the chamber body 71, and the cooling pipe 20 connected through the pipe connection part communicates with the flow path. The chamber body 71 is a vessel-shaped structure that expands the flow path of the cooling pipe 20, and can be designed in size considering the heat dissipation area and can be made of a non-metallic lightweight resin material. However, the upper cover 72 must be made of a heat-conductive material such as aluminum having good thermal conductivity so as to directly conduct heat to the cooling fluid.

A cooling chamber 70 is inserted into the cooling pipe 20, and a cooling plate body is injection-molded using a lightweight resin material installed in a mold. Thereafter, the converter 60 is installed on the top of the exposed cooling pipe 20 and the top surface of the top cover 72 with the heat conduction pad 50 interposed therebetween. Since the housing of the heat dissipation part 61 of the converter is made of metal and the upper cover of the cooling chamber is made of metal, the heat conduction pad 50 is installed by inserting the heat conduction pad so that the metal is closely connected to conduct heat.

Therefore, according to the second embodiment of the present invention, by installing the cooling chamber 70, the cooling pipe 20 is expanded to correspond to the heat dissipation unit 61 of the converter 60 to the area of the upper cover 72. Since it conducts heat and conducts heat by being in direct contact with the cooling fluid on the flow path through the upper cover 72, the heat conduction efficiency is good and the cooling effect can be increased. Therefore, when the cooling chamber 70 is used, it is effective in cooling the heat dissipation parts of elements that require some intensive cooling, that is, generate large amounts of heat.

The converter cooling device in which the cooling chamber according to the present invention is installed in the cooling pipe and the converter cooling device manufactured by the manufacturing method of the inverter and converter for supplying the secondary electricity and the power of the generator to the power of the driving power source motor An automobile equipped as a cooling device can be provided.

The third embodiment according to the present invention is characterized in that the heat conducting member 40 of the first embodiment and the cooling chamber 70 of the second embodiment are provided together at necessary positions corresponding to each other.

A heat conducting member 40 that conducts heat between the heat dissipating part 61 of the converter and the cooling pipe 20, a chamber body 71 inserted and installed on the flow path of the cooling pipe 20, and a heat dissipating part of the converter The cooling chamber 70 composed of the upper cover 72 of the chamber body that directly conducts heat to the cooling fluid is connected to the cooling pipe 20 at the position corresponding to the heat dissipation part of the converter by placing the heat conducting member 40 or the cooling chamber 70 It is characterized in that any one or a combination of installation.

In this case, it is characterized in that the heat conducting pad 50 is interposed between the heat conducting member 40 and the heat dissipating part 61 of the converter and between the upper cover 72 and the heat dissipating part 61 of the cooling chamber 70, respectively. .

As such, the third embodiment of the present invention, as shown in (a) of FIG. 1 and (a) of FIG. 3, may be configured by installing the heat conducting member 40 and the cooling chamber 70 in combination And, it may be configured by installing a heat conducting member 40 or a cooling chamber 70 at each position. That is, the third embodiment may be a configuration in which the heat conducting member 40 and the cooling chamber 70 are installed in combination, and each heat conducting member 40 or the cooling chamber corresponds to the round shape of the cooling pipe 20. The shape of (70) can be made to correspond.

The converter cooling device in which the heat conduction member or/and the cooling chamber is installed in the cooling pipe according to the present invention and the converter cooling device manufactured by the manufacturing method supply the secondary electricity and the power of the generator to the power of the driving power source motor It is possible to provide a vehicle equipped with an inverter and a cooling device for the converter.

On the other hand, as another embodiment in the method of manufacturing the converter cooling device of the present invention, the insert injection step is divided into two steps and injection is performed.

5 is an explanatory view of a manufacturing method of a converter cooling device according to another embodiment of the present invention.

Forming by extruding the cooling pipe 20 to be buried and installed in the cooling plate 10 (S210);

A heat conducting member 40 having a heat dissipating surface 41 surrounding the cooling pipe 20 and making surface contact and a heat absorbing surface 42 extending upward from both sides of the heat dissipating surface 41 and bent into a wing shape and a chamber body 71 having pipe connection parts formed on both sides, connected to the cooling pipe 20 through the pipe connection part, communicating with the cooling passage, and forming a chamber having an open upper surface, and a material having good thermal conductivity. Preparing a cooling chamber 70 having an upper cover 72 coupled to cover the upper surface of the body 71 (S220);

Installing the heat conduction member 40 coupled to the cooling pipe 20 at a position corresponding to the heat dissipation part 61 of the converter, or inserting and installing the cooling chamber 70 on the flow path of the cooling pipe 20 (S230) and,

A first injection step (S240) of insert-injecting a region where the heat conducting member 40 or the cooling chamber 70 is installed to injection mold a part of the cooling plate body;

In the first injection step (S240), the cooling pipe in which the heat conducting member 40 or the cooling chamber 70 together with the cooling pipe 20 forms a part of the cooling plate body is installed in a cooling plate injection mold to perform secondary injection molding. The step of doing (S250),

In the second injection step (S250), the heat conduction pad 50 is placed on the upper surface of the cooling pipe 20 and the heat conduction member 40 or the upper cover 72 of the cooling chamber 70 so that the upper part is exposed in the body of the cooling plate. A step (S260) of installing the heat dissipation unit 61 of the converter so as to correspond therebetween.

As such, in another embodiment of the converter cooling device manufacturing method of the present invention, the heat conducting member 40 or the cooling chamber 70 is installed in the cooling pipe 20, and the heat conducting member 40 or the cooling chamber 70 is A portion of the cooling plate body is formed on the cooling pipe 20 by first insert-injecting only the area including the region. By injection-molding only the area where the heat conducting member 40 or the cooling chamber 70 is installed first, the defect rate in the insert injection process of that area can be reduced, and the secondary injection process can be quickly processed with a simple process.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims.

10: cooling plate 11: seating groove
20: cooling pipe 30: solder paste
40: heat conducting member 41: heat radiation surface
42: heat absorption surface 50: heat conduction pad
60: converter 61: heat sink of the converter
70: cooling chamber 71: chamber body
72: upper cover

Claims (13)

delete delete delete The cooling pipe 20 is embedded in the cooling plate 10, the converter 60 is seated and installed on the cooling plate 10, and the cooling fluid flows into the cooling pipe 20 to cool the converter 60. In the converter cooling device,
a cooling plate 10 for installing the converter 60 on an upper surface of the converter 60;
a cooling pipe 20 which is buried and installed such that an upper portion is exposed on the upper surface of the cooling plate 10 and through which cooling fluid flows;
The seating groove 11 surrounds the lower surface and the side surface of the cooling pipe 20 and makes surface contact, and is installed so as to form a surface on the upper surface of the seating groove 11, and is installed in the body of the cooling plate 10 together with the cooling pipe 20. a heat conduction member 40 that is buried and installed to be exposed to the upper surface of the seating groove to conduct heat from the converter 60 to the cooling pipe 20;
a solder paste 30 interposed on a contact surface between the heat conducting member 40 and the cooling pipe 20;
a heat conduction pad 50 attached between the lower surface of the heat dissipating part 61 of the converter 60 and the seating groove 11 including the upper surface of the heat conducting member 40;
Converter cooling device comprising a.
The method of claim 4,
The heat conducting member 40,
Converter cooling device, characterized in that composed of a straight line or round shape in the longitudinal direction corresponding to the formed straight or round shape of the cooling pipe (20).
In the converter cooling device in which the cooling pipe 20 is buried in the cooling plate 10 so that the top is exposed and the converter 60 is seated and installed thereon to cool the converter,
The cooling chamber 70 is inserted into the passage of the cooling pipe 20 under the heat dissipation part 61 of the converter to expand the cooling passage and directly conduct heat of the converter heat dissipation part 61 to the cooling fluid. ), but
The cooling chamber 70 is inserted into and installed on the flow path of the cooling pipe 20 to expand the cooling flow path, and the heat absorbed by the heat dissipation part 61 of the converter It includes an upper cover 72 of the chamber body that conducts the cooling fluid flowing therein, and a heat conduction pad 50 is interposed between the upper cover 72 and the heat dissipation part 61 of the converter. Device.
The method of claim 6,
The cooling plate (10) and the chamber body (71) are made of a lightweight resin material, and the upper cover is made of a heat-conductive metal material.
The cooling pipe 20 is embedded in the cooling plate 10, the converter 60 is seated and installed on the cooling plate 10, and the cooling fluid flows into the cooling pipe 20 to cool the converter 60. In the converter cooling device manufacturing method,
Forming by extruding the cooling pipe 20 to be buried and installed in the cooling plate 10 (S10);
A heat conducting member 40 having a heat dissipating surface 41 surrounding the cooling pipe 20 and making surface contact and a heat absorbing surface 42 extending upward from both sides of the heat dissipating surface 41 and bent into a wing shape Preparing a step (S20),
A step of combining and installing the heat conducting member 40 by applying solder paste 30 to the cooling pipe 20 at a position corresponding to the heat dissipation part 61 of the converter 60 (S30);
After the cooling pipe 20 to which the heat conducting member 40 is installed is installed in the cooling plate injection mold, the upper part of the cooling pipe 20 and the upper surface of the heat conducting member 40 are exposed and embedded in the body of the cooling plate 10 and performing insert injection to form a seating groove 11 in which the heat dissipating unit 61 of the converter 60 is seated (S40);
A step of installing a heat conduction pad 50 on the exposed upper part of the cooling pipe 20 and the upper surface of the heat conduction member 40 so that the heat dissipation part 61 of the converter is seated in the seating groove 11 (S50) Converter cooling device manufacturing method comprising a.
The method of claim 8,
In the insert injection step (S40),
In a state in which the heat conducting member 40 is coupled to and installed in the cooling pipe 20 at a position corresponding to the heat dissipating part 61 of the converter, the first region to which the heat conducting member 40 is coupled includes a portion of the cooling plate body. insert injection molding;
installing the primary injection-molded product in a mold for forming a cooling plate body and injection-molding the entire cooling plate body so that the upper surface of the cooling pipe 20 and the upper surface of the heat conducting member 40 are exposed;
A method for manufacturing a converter cooling device, characterized in that the separation and injection molding.
In the converter cooling device manufacturing method in which the cooling pipe 20 is buried in the cooling plate 10 so that the top is exposed and the converter 60 is seated and installed thereon to cool the converter,
extruding and forming the cooling pipe 20 to be buried and installed in the cooling plate 10 (S110);
Pipe connection parts are formed on both sides, and the chamber body 71 is connected to the cooling pipe 20 through the pipe connection part to communicate with the cooling flow path and forms a chamber with an open upper surface, and the chamber body 71 made of a heat conductive material. Preparing a cooling chamber 70 having a top cover 72 coupled to cover the top surface of the (S120);
The cooling pipe 20 at the position corresponding to the heat dissipating part 61 of the converter is cut at a predetermined distance, the chamber body 71 is inserted, the cooling pipe 20 is connected to the pipe connection part on both sides, and the upper cover 72 is removed. Combined installation step (S130) and;
After the chamber body 71 is installed on the flow path of the cooling pipe 20 and the cooling pipe 20 coupled with the upper cover 72 is installed in the cooling plate injection mold, the top and the top of the cooling pipe 20 injection-molding the cooling plate body so that the upper surface of the upper cover 72 is exposed and embedded in the cooling plate body, and the seating groove 11 in which the heat dissipating part 61 of the converter is seated is formed (S140);
Installing heat conduction pads 50 on the exposed top of the cooling pipe 20 and the upper surface of the top cover 72 so that the heat dissipation part 61 of the converter is seated (S150);
Converter cooling device manufacturing method comprising a.
The method of claim 10,
In the injection molding step (S140),
In the state where the cooling chamber 70 is installed in the cooling pipe 20 at a position corresponding to the heat dissipation part 61 of the converter, the primary insert includes a part of the cooling plate body only in the area where the cooling chamber 70 is coupled. injection molding;
installing the primary injection-molded product in a mold for forming a cooling plate body and injection-molding the entire cooling plate body so that the upper surface of the cooling pipe 20 and the upper surface of the heat conduction pad 50 are exposed;
A method for manufacturing a converter cooling device, characterized in that the separation and injection molding.
The cooling pipe 20 is embedded in the cooling plate 10, the converter 60 is seated and installed on the cooling plate 10, and the cooling fluid flows into the cooling pipe 20 to cool the converter 60. In the converter cooling device manufacturing method,
Forming by extruding the cooling pipe 20 to be buried and installed in the cooling plate 10 (S210);
A heat conducting member 40 having a heat dissipating surface 41 surrounding the cooling pipe 20 and making surface contact and a heat absorbing surface 42 extending upward from both sides of the heat dissipating surface 41 and bent into a wing shape And pipe connection parts are formed on both sides, the chamber body 71 and the upper surface of the chamber body 71 are connected to the cooling pipe 20 through the pipe connection part to communicate with the cooling flow path and form a chamber with an open top surface. Preparing a cooling chamber 70 having a top cover 72 coupled to block (S220);
Installing the heat conduction member 40 coupled to the cooling pipe 20 at a position corresponding to the heat dissipation part 61 of the converter, or inserting and installing the cooling chamber 70 on the flow path of the cooling pipe 20 (S230) and,
A first injection step (S240) of insert-injecting a region where the heat conducting member 40 or the cooling chamber 70 is installed to injection mold a part of the cooling plate body;
In the first injection step (S240), the cooling pipe in which the heat conducting member 40 or the cooling chamber 70 together with the cooling pipe 20 forms a part of the cooling plate body is installed in a cooling plate injection mold to perform secondary injection molding. Step (S250) of doing,
In the secondary injection step (S250), the cooling pipe 20, the heat conducting member 40, and the heat conducting pad 50 are placed on the upper surface of the upper cover 72 of the cooling chamber 70 so that the upper part is exposed in the body of the cooling plate. A method of manufacturing a converter cooling device comprising a step (S260) of correspondingly installing a heat dissipation unit 61 of the converter through the intervening. The method of claim 12,
When the heat conduction member 40 installed in the cooling pipe 10 and the cooling chamber 70 are in close proximity, the heat conduction member 40 and the cooling chamber 70 are firstly embedded in a body of one cooling plate. A method of manufacturing a converter cooling device, characterized in that by injection molding.

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